t7. a. QEOLOaiCAL SORVEY 

 .■...'j--.s';,'..;,.in..-:'.'.nr: 



LAELE LAHONTAN PL XS1?[ 



■^ -Holinii sand. 



L'll-wcirn unvel. 



■ Kveiily stratilied day, contorted in pl;icea. 



Fvenly strntilied ro;irse clay, with odiitic emint. 



Ciranuliir limonite. witli shells and fifh-huiies. 



- Fine, evfnly str;Uiri<*d. Iight-oilnred i lay. riiiplt-iiiarkcJ in pl.icps. 



,■ S.mdy tlay, roinpart. 

 ,-',-• Nearly fire Cijpris shells. 

 '',^"'^.. Light drah jointed clay, with fi-w r^;)ris shells. 

 "1-— Light-drah day, rich in ('i/i/rif! f-he!!^. 



;- . Evenly stralilled sandy day, Willi a tew gnivel-gr.iili^. 



>»,*'— Nearly pnre Cypria shells. 

 .^''-- Impure volcanic du«t. 

 '^^ Pure white volcanic dii*L 

 ^ Fine sand, with Vijpris shells and fi--h-hones. 



• Well-worn stratilied gravel, cemented. 

 Homugeaeou!. sandy cliiy. 



iliple-mirked, with llslidiotip,' 



Fine aand and Cypris alit-lts, 



___-- Fine gravel. 



Homogeneous drah day, 



^"^^--i.. Sand and pehbles. 



-—.Fine water worn gravel, cemented in plate* 



__ Homogenoou?, evenly stratified, jointed gray gandy lake-beds, ii.nlorted tow ird base. 



Trnckee River, 



SECTION OF LAHONTAN SEDIMENTS, AGENCY BRIDGE, TRUCKEE RIVER, NEVADA. 



